New Brunswick, NJ Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from New Brunswick's primary NOAA station, NEW BRUNSWICK 3 SE.
The climate verdict for New Brunswick
Water is the standout signal in New Brunswick, New Jersey: 49.5 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 54°F. Its climate comfort score of 63/100 (good) lands mid-pack nationally, exceeding 46% of station-mapped location scores.
- 54°F
- average temperature, NOAA 1991-2020 normal
- 63/100
- comfort score, above 46% of station-mapped location scores
- 49.5"
- annual precipitation · 29" snow
- 194 days
- growing season, frost-free days
New Brunswick: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00286055 · New Brunswick, NJ 54°F mean · 49.5" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 54°F
- RANK-MID #3,842
- PHOTO-FINISH ≈ Cumberland
- PRCP-MID 49.5"
- SWING-MID 45°F
- COMF-MID 63/100
- LOAD-HEAT 5,101 HDD
- STN-1 USC00286055
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Cumberland, MD (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every NJ station list.
- New Brunswick (this station) 54°F
- Hot Marietta Wwtp, OH 54°F
- Near Cumberland, MD 54°F
- Near Wfo Wilmington, OH 54°F
- Near Terre Haute Caa, IN 54°F
Climate Living Index · New Brunswick
New Brunswick: 57/100 · grade C
New Brunswick publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for New Brunswick, not an official NOAA rating. Rankings still use Comfort Score 63/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 111 calendar days | 70/100 · B |
| Frost-free season | 194 days/year | 60/100 · C |
| Annual temperature balance | 53.7°F · 13.8° from 67.5°F | 55/100 · C |
| Precipitation balance | 49.5 in · 14.5 from 35 in | 49/100 · D |
| Snowfall burden | 29.0 inches/year | 39/100 · F |
New Brunswick · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
New Brunswick is a continental Köppen climate: Dfa
Coldest-month mean 31.6°F and warmest-month mean 76.1°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 76.1°F
- Coldest month
- 31.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where New Brunswick sits across the climate record
Three NOAA fields for New Brunswick's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 56th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 20% wettest
- New Brunswick's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 56th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How New Brunswick compares across U.S. station-mapped locations
New Brunswick's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 46th percentile score exceeds 46% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
New Brunswick's measured station temperature trend
MethodologyAcross 143 complete annual observations from 1863 to 2025, NEW BRUNSWICK 3 SE warmed at a fitted rate of 0.11°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- New Brunswick primary station fitted change +0.11 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 40°F (5°C) | 23°F (-5°C) | 32°F (0°C) | 3.7" | 8.3" | 25.8 | 0.0 |
| February | 43°F (6°C) | 24°F (-4°C) | 33°F (1°C) | 3.0" | 9.3" | 23.6 | 0.0 |
| March | 51°F (10°C) | 31°F (-1°C) | 41°F (5°C) | 4.4" | 5.2" | 18.3 | 0.0 |
| April | 63°F (17°C) | 41°F (5°C) | 52°F (11°C) | 3.9" | 0.6" | 4.4 | 0.3 |
| May | 72°F (22°C) | 51°F (10°C) | 61°F (16°C) | 4.0" | 0.0" | 0.1 | 1.1 |
| June | 81°F (27°C) | 60°F (16°C) | 71°F (22°C) | 4.8" | 0.0" | 0.0 | 4.2 |
| July | 87°F (30°C) | 66°F (19°C) | 76°F (24°C) | 4.8" | 0.0" | 0.0 | 9.7 |
| August | 85°F (29°C) | 64°F (18°C) | 74°F (24°C) | 4.7" | 0.0" | 0.0 | 6.4 |
| September | 78°F (26°C) | 57°F (14°C) | 67°F (20°C) | 4.2" | 0.0" | 0.0 | 1.9 |
| October | 67°F (19°C) | 44°F (7°C) | 55°F (13°C) | 4.1" | 0.2" | 2.7 | 0.1 |
| November | 56°F (13°C) | 35°F (2°C) | 45°F (7°C) | 3.4" | 0.5" | 13.2 | 0.0 |
| December | 45°F (7°C) | 28°F (-2°C) | 37°F (3°C) | 4.5" | 4.9" | 22.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 13, short of 90°F on every date, while 111 dates carry a normal low at or below freezing, the coldest 22°F near January 24.
The freezing stretch
The normal low stays at or below 32°F into March 19, then returns to freezing around November 30, covering 111 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 18, when 41% of years recorded at least a hundredth of an inch. The driest is September 12 at 28%. Summed across the calendar, that is about 126 wet dates a year.
The widest day
October 6 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for New Brunswick.
Where New Brunswick Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
New Brunswick earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 8.3"
11.1 days with precipitation
Snow: 9.3"
9.6 days with precipitation
Snow: 5.2"
10.8 days with precipitation
Snow: 0.6"
11.5 days with precipitation
12.6 days with precipitation
11.4 days with precipitation
10.7 days with precipitation
10.1 days with precipitation
8.8 days with precipitation
Snow: 0.2"
9.8 days with precipitation
Snow: 0.5"
8.7 days with precipitation
Snow: 4.9"
10.3 days with precipitation
New Brunswick spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 23%, with neither reaching the 35% that would mark a distinct wet season. New Brunswick has no dry season to plan around, though it does carry a 44.5°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 4.8" and February 3.0". The three wettest months together take 29% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in New Brunswick, it arrives in quantity
49.5" of precipitation falls across only about 125 wet days here, averaging 0.39 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 125 a year, 34% of all days
- Average depth per wet day
- 0.39 inches
- Most wet days
- May, about 13
- Fewest wet days
- November, about 9
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to New Brunswick
New Brunswick averages 29.0 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 13 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 29.0 inches of depth.
- Days recording measurable snow: about 13 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 6% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 26
50% probability date
Last Spring Freeze
April 15
50% probability date
Growing Season
194 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,101
Higher = more heating needed
Cooling Degree Days
1,037
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside NJ closest to New Brunswick on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (54°F here).
- Beaverton, OR 54°F · 0.0°F off
- Caliente, NV 54°F · 0.0°F off
- Carrollton, MO 54°F · 0.0°F off
- Centralia, KS 54°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (49.5" here), excluding temperature-peer places.
- Dardanelle, AR 49.5" · 0.0" off
- Lexington, GA 49.5" · 0.0" off
- New York, NY 49.5" · 0.0" off
- Madison, WV 49.5" · 0.0" off
Snow and freeze rhythm
When cold and snow define New Brunswick
heating led · wet · mid swing
New Brunswick's energy balance leans toward cold weather: 5,101 annual heating degree days against 1,037 for cooling. Its 44.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
New Brunswick's frost-free season lasts about 194 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. New Brunswick coldest normal
January
The monthly mean of 32°F (0°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. New Brunswick typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. New Brunswick snow peak
February
New Brunswick averages 29.0 inches of snow a year, with February the snowiest month on the normals.
Questions about New Brunswick's climate
How much snow does New Brunswick get? ▼
How cold does New Brunswick get in winter? ▼
How much energy does heating and cooling require in New Brunswick? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from New Brunswick's primary station: NEW BRUNSWICK 3 SE (USC00286055). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3451210). Match rule for New Brunswick: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for New Brunswick comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.